function GetQueryString(name) {
        var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
        var r = window.location.search.substr(1).match(reg);
        if (r != null)
        { return unescape(r[2]); }
        else {
            return null;
        }
}

            
 if (GetQueryString("s") != '' && GetQueryString("s") != null) {
           var pvdallname=GetQueryString("s");
           var banneralink="";	
            switch(pvdallname){
		                case "baidu": banneralink = "http://www.caicai98.com/yingyan/index.html?s=baidu"; break;
		                default: banneralink="http://www.caicai98.com/yingyan/index.html?s="+pvdallname;break;
		             } 

window.location=banneralink;
}